The time has come for your sobriety check, so start blowing! Check grandma and grandpa every time they come over for holiday dinner. Attach this Keychain to your keys and anyone else's who may need a little check-in now and then. The meter gives you a spot on alcohol reading and gauges your progress in terms of achieving sobriety. The Keychain also functions as a flashlight, clock, stopwatch, and source of entertainment.
DIRECTIONS: 1. Press and hold the "POWER" button, the green LED will keep lighting for ready in about 10 seconds, the unit enters into the testing status. 2. Wait about 10 seconds then exhale into the exhale pipe and look into the testing result (user alcohol level) as follows: A. GREEN light on: Safe - under 0.05% BAC B. YELLOW light on: Caution - 0.05% BAC C. RED and YELLOW light on: Danger - over 0.05% BAC